Quick-break switch.



No. 744,115. PATENTD Nov. 1v, 190s.

H. B. SARGENT.

QUICK BREAK SWITCH.

APPLIUATION FILED APB.. 18. 1902.

inve njor: Howard F?. Sargent,

UNITEDv STATES Patented vNovember 17, 1903.

PATENT OFFICE.

HOWARD R. sARGENT, or SCHENECTADY, NEW YORK, AssIeNOR TO GEN- ERAL ELECTRIC COMPANY, A CORPORATION OENEW YORK.

QUICK-BREAK SV VITCH-l QPECIFICATION forming part of Letters Patent No. 744,115, dated November 17, 1903.

Application filed April 18, 1902. Serial No. 103,531. (Nemodel.)

`blade separates from the contact-clip.

The invention consists in certain improvements in the construction of such switches which simplify and cheapen their manufacture.

It has been proposed heretofore to make a quick-break switch in which the main blade has hinged to it or near it an auxiliaryblade, the two being independently movable within certain limits, but so connected that after the main blade has been opened to a certain angle it lifts the auxiliary blade out of its clip, and a spring which has been put under tension by the opening of the main blade snaps the auxiliary blade wide Open. My invention aims to simplify inventions of this kind with respect to the construction and attachment of the auxiliary blade.

In the accompanying drawings, Figure 1 is v a side elevation of a switch of the class described embodying my improvements. Fig. 2 is a top plan view of the same, and Fig. 3 is a perspective view of my improved auxiliary blade.

The switch is mounted on the usual base 1, provided with line-terminals 2, to which are connected the contact-clips 8 4. The main switch-blade 5 is hinged to the elip 3 and closes into the other clip 4 in the usual manner. Ananxiliary blade 6 is hinged at one end to the main blade near the clip 3, and its other end is adapted to enter the other clip 4 under the main blade. One or more helical springs 7 connect the main and auxiliary blades and are put under tension when the main blade is opened. As soon as the'inain blade rises to such an angle that it strikes the rear end of the auxiliary blade it forcibly lifts the latter out of the clip 4 and the springs quickly snap the auxiliary blade open.

I construct the auxiliary blade from asingle punching of sheet metal, preferably copper, bent into U shape, the sides ofthe blade standing apart, as shown in Fig. 3, except at one end, where they are closed together to form a contact-blade 8 to enter the clip 4. Near this end are two slightly-flaring guidelugs 9, which straddle the lower edge of the main bladeand keep the two blades in line when they are closed together. At the other end of the blade 6 are two ears 10, which fit upon opposite sides of the main blade and are perforated to receive a hinge-pin 1l, passing through' them and thev main blade. Below these ears the rear end 12 of the blade 6 extends to the right point to be engaged by the main blade when it is opened to the proper angle to insure the quick opening of the blade 6. Near the ears 10 are two iiaring arms 13, to which the ends of two helical springs 7 are attached, their other ends being hooked into lugs 14 on the main blade.

My invention provides a simple and cheap construction of the auxiliary blade for this class of switches, involving but few parts and aminimum of material well disposed to perform the workrequired.

What I claim as new, and desire to secure by Letters Patent of the United-States, is-

1. In a quick-,break switch, an auxiliary blade to be hinged to themain blade, consisting of a single piece of metal having integral ears fitting the main blade and integral guidelugs to engage therewith.

2. In a quick-break switch, an auxiliary blade tobe hinged tothe main blade, consisting of a U-shaped piece of sheet metal whose upper edges have perforated ears at one end.

3. In a quick-break switch, an auxiliary blade to be hinged to the main blade, consisting of a U-shaped piece of sheet metal whose upper edges have perforated ears at one end and slightly-daring guide-lugs at the other end.

4. In a quick-break switch, an auxiliary blade to be hinged to the main blade, consisting of a U-shaped piece of sheet metal whose upper edges have perforated ears at one end,

ICO

flaring arms near said ears, and guide-lugs sheet metal G, having a Closed end 8, guidenear the other end. lugs 9, perforated ears l0, extended endl?,

5. In a quick-break switch, an auxiliary and flaring,` arms 13. blade to be hinged to the main blade, Consist- In Witness whereof I have hereunto setmy 5 ing of a sheet-metal punching,` bent into U hand this 16th day of April, 1902. i

shape, With its sides standing apart except at v one end, Where they are closed together to HOWARD R' SARGENT' form a Contact-blade. Vtnesses:

6. An auxiliary blade for a quick-break BENJAMIN B. IIULL,

1o switch, consisting of the U-shaped piece of HELEN ORFORD. 

